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Status LED
3.2.
CPU LED
RXD LED
TXD LED
ERR LED
INSTALLATION
1. Connect the option board to the inverter control board using each connector on the board (See the
Figure 1).
Indicates normal operation of the board when blinking once per second.
Receiving 485 signal
Responding to 485 signal
On and Off intermittently
Blinking with CPU LED at the same
time
Blinking with CPU LED in an
opposite way
modbus-rtu iS5 manual.doc 4
Figure 1. Layout
Wrong DATA received (Normal
operating)
DPRAM communication fault
Network Connection TimeOut <I/O-49>
elapsed
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